I'm assuming by "series" you mean "Doctor" because there are 30 series' (the upcoming series is no. 31).
we don't know what Doctor 2's is, however...most of series 2 was erased in recycling efforts by the BBC (videotape being horribly expensive, then)
Nope, wasn't about price. It was about space. They had whole rooms of old tapes lying around so they got rid of them to make for newer stuff. From clips I have seen the 2nd Doctors TARDIS was just the 1st Doctors TARDIS and only gets a real change by the time Pertwee came along (Troughton commenting in The Three Doctors", "Ooh, I like what you've done with the place.")
3rd Doctors TARDIS stayed relatively the same till The Five Doctors in which a much more hi-tech console was introduced (5th Doctor) which stayed the same through to the end of the series in 1986 (7th Doctor).
USDM series 8 movie doesn't count
Yes it does. If the 8th Doctor was included in the info stamp shown in The Next Doctor, then that effectively makes any televised 8th Doctor apperances accurate. Also, the Master says in "The Sound of Drums" that the Time Lords resurrected him from The Eye of Harmony which is how the Master died in the Movie.
9/10 are based on 8, and are way out of the league of anybody here
Not necessarily. I've seen a 9/10 Doctor TARDIS interior which looks relatively low poly out there on the interwebs. I'll try and find it.